diff --git a/src/page_pool.rs b/src/page_pool.rs
index e0b6dc4..c2707c7 100644
--- a/src/page_pool.rs
+++ b/src/page_pool.rs
@@ -69,7 +69,8 @@
 
     /// Get as slice
     ///
-    /// **Unsafe**: The returned slice is created from its address and length which is stored in the
+    /// # Safety
+    /// The returned slice is created from its address and length which is stored in the
     /// object. The caller has to ensure that no other references are being used of the pages.
     pub unsafe fn get_as_slice<T>(&self) -> &[T] {
         assert!((core::mem::align_of::<T>() - 1) & self.pa == 0);
@@ -82,7 +83,8 @@
 
     /// Get as mutable slice
     ///
-    /// **Unsafe**: The returned slice is created from its address and length which is stored in the
+    /// # Safety
+    /// The returned slice is created from its address and length which is stored in the
     /// object. The caller has to ensure that no other references are being used of the pages.
     pub unsafe fn get_as_mut_slice<T>(&mut self) -> &mut [T] {
         assert!((core::mem::align_of::<T>() - 1) & self.pa == 0);
@@ -95,7 +97,8 @@
 
     /// Set contents from slice
     ///
-    /// **Unsafe:** The caller has to ensure that the passed slice is a valid page range.
+    /// # Safety
+    ///  The caller has to ensure that the passed slice is a valid page range.
     pub unsafe fn from_slice<T>(s: &mut [T]) -> Pages {
         Pages {
             pa: KernelSpace::kernel_to_pa(s.as_ptr() as u64) as usize,
@@ -231,10 +234,6 @@
     pub fn release_pages(&self, pages_to_release: Pages) -> Result<(), PagePoolError> {
         self.pages.lock().release(pages_to_release)
     }
-
-    fn round_up_to_page_size(length: usize) -> usize {
-        (length + Page::SIZE - 1) & !(Page::SIZE - 1)
-    }
 }
 
 #[cfg(test)]